Orientational bistability and first order phase transitions in liquid crystalline nanosuspensions

Authors

  • A.N. Zakhlevnykh Perm State National Research University
  • D.A. Petrov Perm State National Research University

DOI:

Keywords:

liquid crystal, magnetic suspension, ferronematic, nanoparticles, soft coupling, segregation effect, orientational bistability

Abstract

In the framework of continuum theory threshold transitions induced by a magnetic field in compensated and usual (magnetized) ferronematics, i.e., suspensions of monodomain magnetic particles in nematic liquid crystals are studied. Analytical expressions for the threshold fields of orientational transitions between coexisting phases are obtained. It is shown that the transitions between non-uniform and uniform states can be the first or second order phase transitions in the dependence on the intensity of segregation effects.

Supporting Agencies
Работа выполнена при финансовой поддержке РФФИ-Урал (гранты № 13-02-96001 и 16-42-590539).

Author Biographies

  • A.N. Zakhlevnykh, Perm State National Research University
    доктор физико-математических наук, заведующий кафедрой физики фазовых переходов
  • D.A. Petrov, Perm State National Research University
    кандидат физико-математических наук, доцент кафедры физики фазовых переходов

References

  1. Zakhlevnykh A.N., Petrov D.A. Magnetic field induced orientational transitions in soft compensated ferronematics // Phase Transitions. - 2014. - Vol. 87. - P. 1-18.
  2. Zakhlevnykh A.N., Petrov D.A. Weak coupling effects and re-entrant transitions in ferronematic liquid crystals // J. Molecular Liquids. - 2014. - Vol. 198. - P. 223-233.

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Published

2017-11-16

Issue

No. 3 (2017)

Section

Research: theory and experiment

How to Cite

Zakhlevnykh, A. ., & Petrov, D. . (2017). Orientational bistability and first order phase transitions in liquid crystalline nanosuspensions. Perm Federal Research Centre Journal, 3, 30-35. https://journal.permsc.ru/index.php/pscj/article/view/PSCJ2017n3p4